Used cover art: Which is better?

I just returned from a visit to my favorite used bookstore, McKay’s in Nashville, and I thought instead of just posting a couple of pictures of the books’ spines that I would have a sort of cover art “contest” to see which books are more visually appealing to you. In these photos, a cast-iron squirrel shall be like blind Justice; it stands between the two books, trying to decide which one out of the two in each of these eight photos is more attractive visually. Want to judge along with the squirrel? Just say left or right for each of the eight photos. Curious to see which are more appealing to readers here.